Transmission of multiple ACK/NAK bits with data

Abstract

This invention is a method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes. The user equipment transmits a combination of a plurality of ACK/NAK response signals and related data. The related data could be the number of bits N of the plurality of ACK/NAK response signals or the number of detected downlink communications grants S requiring ACK/NAK response signals. This related data could be a cyclical redundancy check set of bits which may be scrambled upon the numbers N or S. Similar selections are feasible with resource elements or an index of a modulation symbol or codeword.

1. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of bits N of the plurality of ACK/NAK response signals; 
 producing at the mobile user's equipment a cyclical redundancy check set of bits of the plurality of N ACK/NAK bits; 
 scrambling the cyclical redundancy check set of bits and the number N; and 
 employing an uplink subframe to transmit the plurality of ACK/NAK response signals and the scrambled cyclical redundancy check set of bits from the mobile user's equipment to a base station. 
 
     
     
       2. The method of  claim 1 , wherein:
 said step of scrambling the cyclical redundancy check set of bits and the number N scrambles the cyclical redundancy check set of bits with a first value A if N is odd and a second value B if N is even. 
 
     
     
       3. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of bits N of the plurality of ACK/NAK response signals; 
 producing at the mobile user's equipment a cyclical redundancy check set of bits of the plurality of N ACK/NAK bits; 
 determining at the mobile user's equipment a number of detected downlink communications grants S requiring ACK/NAK response signals; 
 scrambling the cyclical redundancy check set of bits and the number S; and 
 employing an uplink subframe to transmit the plurality of ACK/NAK response signals and the scrambled cyclical redundancy check set of bits from the mobile user's equipment to a base station. 
 
     
     
       4. The method of  claim 3 , wherein:
 said step of scrambling the cyclical redundancy check set of bits and the number S scrambles the cyclical redundancy check set of bits with a first value A if S is odd and a second value B if S is even. 
 
     
     
       5. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of bits N of the plurality of ACK/NAK response signals; 
 compressing the N bits of the ACK/NAK response signals into M bits where 0<M<N after production; and 
 employing an uplink subframe to transmit the plurality of ACK/NAK response signals and the cyclical redundancy check set of bits from the mobile user's equipment to a base station. 
 
     
     
       6. The method of  claim 5 , wherein:
 the number of M bits is predetermined. 
 
     
     
       7. The method of  claim 5 , further comprising the steps of:
 employing the uplink subframe to transmit the number N from the mobile user's equipment to the base station. 
 
     
     
       8. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes, wherein communications protocol includes 2resource elements for communication and comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of bits N of the plurality of ACK/NAK response signals; 
 selecting a set of resource elements dependent upon the number N including selecting a first set of resource elements if N is odd and a second set of resource elements if N is even; and 
 employing an uplink subframe to transmit the plurality of ACK/NAK response signals from the mobile user's equipment to the base station employing the selected set of resource elements. 
 
     
     
       9. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes, wherein communications protocol includes 2 resource elements for communication and comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of detected downlink communications grants S requiring ACK/NAK response signals; and 
 selecting a set of resource elements dependent upon the number S including selecting a first set of resource elements if S is odd and a second set of resource elements if S is even; and 
 employing an uplink subframe to transmit the plurality of ACK/NAK response signals from the mobile user's equipment to the base station employing the selected set of resource elements. 
 
     
     
       10. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes, wherein communications protocol includes a plurality of indices for modulation symbols/codewords for communication and comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of bits N of the plurality of ACK/NAK response signals; 
 selecting a codeword index dependent upon the number N; and 
 wherein said step of employing the uplink subframe to transmit the plurality of ACK/NAK response signals employs the selected codeword index. 
 
     
     
       11. The method of  claim 10 , wherein the number of codeword indices is 2 and wherein:
 said step of selecting a codeword index selects a first codeword index if N is odd and a second codeword index if N is even. 
 
     
     
       12. A method of wireless communication having a communications protocol providing more downlink subframes than uplink subframes, wherein communications protocol includes a plurality of codeword indices for modulation symbols/codewords for communication and comprising the steps of:
 at a mobile user's equipment detecting within a frame a plurality of downlink communications; 
 for each detected downlink communication producing either an acknowledge (ACK) response signal or a non-acknowledge (NAK) response signal; 
 determining at the mobile user's equipment a number of detected downlink communications grants S requiring ACK/NAK response signals; and 
 selecting a codeword index dependent upon the number S; and 
 wherein said step of employing the uplink subframe to transmit the plurality of ACK/NAK response signals employs the selected codeword index. 
 
     
     
       13. The method of  claim 12 , wherein the number of codeword indices is 2 and wherein:
 said step of selecting an index selects a first codeword index if S is odd and a second codeword index if S is even.